package com.tanhua.server.service;


import cn.hutool.core.collection.CollUtil;
import com.tanhua.autoconfig.template.OssTemplate;
import com.tanhua.commons.utils.Constants;
import com.tanhua.dubbo.api.MovementApi;
import com.tanhua.dubbo.api.UserInfoApi;
import com.tanhua.dubbo.api.VisitorsApi;
import com.tanhua.model.domain.UserInfo;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.mongo.Visitors;
import com.tanhua.model.vo.ErrorResult;
import com.tanhua.model.vo.MovementsVo;
import com.tanhua.model.vo.PageResult;
import com.tanhua.model.vo.VisitorsVo;
import com.tanhua.server.exception.BusinessException;
import com.tanhua.server.interceptor.UserHolder;
import org.apache.commons.lang.StringUtils;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.*;
import java.util.stream.Collectors;

@Service
public class MovementService {

    @Autowired
    private OssTemplate ossTemplate;
    @DubboReference
    private MovementApi movementApi;
    @DubboReference
    private UserInfoApi userInfoApi;
    @DubboReference
    private VisitorsApi visitorsApi;

    @Autowired
    private RedisTemplate<String,String> redisTemplate;
    @Autowired
    private  MqMessageService mqMessageService;

    /**
     * 发布动态
     * @param movement
     * @param imageContent
     */
    public void publishMovement(Movement movement, MultipartFile[] imageContent) throws IOException {

        //判断发布的动态是否存在
        if(StringUtils.isEmpty(movement.getTextContent())){
            throw new BusinessException(ErrorResult.contentError());
        }
        //获取当前登录人的id
        Long userId = UserHolder.getUserId();
        List<String> medias =new ArrayList<>();

        //将文件内容上传到阿里云OSS。获取请求地址
        for (MultipartFile multipartFile : imageContent) {
            String upload = ossTemplate.upload(multipartFile.getOriginalFilename(), multipartFile.getInputStream());
            medias.add(upload);
        }

        //将数据封装到movement中
        movement.setUserId(userId);
        movement.setMedias(medias);
        //调用API完成新增
        String movementId = movementApi.publish(movement);
        mqMessageService.sendAudiMessage(movementId);

    }

    /**
     * 分页查询我的动态
     * @param userId
     * @param page
     * @param pagesize
     * @return
     */
    public PageResult findByUserId(Long userId, Integer page, Integer pagesize) {
        //根据用户id ，调用api查询个人动态内容
        PageResult pr = movementApi.findByUserId(userId,page,pagesize);
        //获取PageResult中的item列表对象
        List<Movement> items = (List<Movement>) pr.getItems();
        //非空判断
        if(items == null){
            return pr;
        }
        //循环数据列表
        UserInfo userInfo=userInfoApi.findById(userId);
        List<MovementsVo> vos =new ArrayList<>();
        for (Movement item : items) {
            //一个movement构建一个vo对象
            MovementsVo vo=MovementsVo.init(userInfo,item);
            vos.add(vo);
        }

        //构建返回值
        pr.setItems(vos);
        return pr;
    }

    //好友动态
    public PageResult findFriendMovements(Integer page, Integer pagesize) {
        //1、获取当前用户id
        Long userId = UserHolder.getUserId();
        //2、查询数据列表
        List<Movement> items = movementApi.findFriendMovements(userId,page,pagesize);
        //3、非空判断
        return getPageResult(page, pagesize, items);
    }


    private PageResult getPageResult(Integer page, Integer pagesize, List<Movement> items) {
        if(CollUtil.isEmpty(items)) {
            return new PageResult();
        }
        //4、获取好友用户id
        List<Long> userIds = CollUtil.getFieldValues(items, "userId", Long.class);
        //5、循环数据列表
        Map<Long, UserInfo> userMaps = userInfoApi.findByIds(userIds, null);
        List<MovementsVo> vos = new ArrayList<>();
        for (Movement item : items) {
            //5、一个Movement构建一个Vo对象
            UserInfo userInfo = userMaps.get(item.getUserId());
            if(userInfo!=null){
                MovementsVo vo = MovementsVo.init(userInfo, item);
                //修复点赞状态的bug  判断hashKey是否存在
                String key = Constants.MOVEMENTS_INTERACT_KEY + item.getId().toHexString();
                String hashKey = Constants.MOVEMENT_LIKE_HASHKEY + UserHolder.getUserId();
                if(redisTemplate.opsForHash().hasKey(key,hashKey)){
                    vo.setHasLiked(1);
                }
                String lovehashKey = Constants.MOVEMENT_LOVE_HASHKEY + UserHolder.getUserId();
                if(redisTemplate.opsForHash().hasKey(key,lovehashKey)){
                    vo.setHasLoved(1);
                }
                vos.add(vo);
            }

        }
        //6、构建返回值
        return new PageResult(page, pagesize, 0L, vos);
    }

    /**
     * 查询推荐动态
     * @param page
     * @param pagesize
     * @return
     */
    public PageResult findRecommendMovements(Integer page, Integer pagesize) {
        //从redis获取10条数据
        String redisKey = Constants.MOVEMENTS_RECOMMEND + UserHolder.getUserId();
        String redisValue=redisTemplate.opsForValue().get(redisKey);
        //判断数据是否存在
        List<Movement> list= Collections.EMPTY_LIST;
        if(StringUtils.isEmpty(redisValue)){
            //不存在，调用api随机构造数据
            list=movementApi.randomMovements(pagesize);
        }else{
            //存在，处理pid数据
            String[] values = redisValue.split(",");
            //判断当前页的起始条数是否小于数组条数
            if((page-1)*pagesize< values.length){
                List<Long> pids = Arrays.stream(values).skip((page - 1) * pagesize).limit(pagesize)
                        .map(e->Long.valueOf(e))
                        .collect(Collectors.toList());
                //调用api根据pid数组查询动态数据
                list=movementApi.findMovementsByPids(pids);
            }
        }
        //调用公共方法构造返回值
        return getPageResult(page,pagesize,list);
    }

    /**
     * 根据id查询单条动态
     * @param movementId
     * @return
     */
    public MovementsVo findById(String movementId) {
        mqMessageService.sendLogMessage(UserHolder.getUserId(),"0202","movement",movementId);
        //调用api根据id查询动态详情
        Movement  movement = movementApi.findById(movementId);
        //转化vo对象
        if(movement != null){
            UserInfo userInfo=userInfoApi.findById(movement.getUserId());
            return MovementsVo.init(userInfo,movement);
        }else{
            return null;
        }

    }

    /**
     * 首页谁看过我
     * @return
     */
    public List<VisitorsVo> queryVisitorsList() {
        //查询访客时间
        String key =Constants.VISITORS_USER;
        String hashKey =String.valueOf(UserHolder.getUserId());
        String value=(String) redisTemplate.opsForHash().get(key,hashKey);
        Long date =StringUtils.isEmpty(value)?null:Long.valueOf(value);
        //调用api查询数据列表
        List<Visitors> list = visitorsApi.queryMyVisitors(date,UserHolder.getUserId());
        if(CollUtil.isEmpty(list)){
            return new ArrayList<>();
        }
        //提取用户id
        List<Long> userIds = CollUtil.getFieldValues(list, "visitorUserId", Long.class);
        //查看用户详情
        Map<Long, UserInfo> map = userInfoApi.findByIds(userIds, null);
        List<VisitorsVo> vos =new ArrayList<>();
        //构造vo
        for (Visitors visitors : list) {
            UserInfo userInfo=map.get(visitors.getVisitorUserId());
            if(userInfo != null){
                VisitorsVo vo =VisitorsVo.init(userInfo,visitors);
                vos.add(vo);
            }
        }
        return vos;
    }
}
